Tire lug



Oct. 28, 1930. T. w. BECHT'OLD 1,779,689

TIRE LUG Original Filed llay 5. 1927 l atentecl Oct. 28, 1930 :IUNITETROY, w. BECHTOLID, or EREEEQBT, inn vois, AssIGNon ToGnoncE 3. mean, I

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Application filed 115 1927, Serial a... 18 8,8 80. Renewed mang -ieo;1{'

i This invention-relates to traction devices and more particularlya tire"lugfor use on motor vehicles. V The principal object 'ofithe presentinven- 5 tion is to provide a tire lug intended for at- 1 tachmentsolely to the tire of the vehicle wheel so as not to rely on anyfastening means passin around the felly of the wheel between the spo esthereof. In other words, the presffi ent device is applicable as readilyto disc wheels ast'o artillery wheels, and is furthermore not limited inits application to wheels where there is sufficient clearance for achainor other fastening to be extended between the spokes through the spacebetween the brake drum and the felly of the wheel, which usually is avery limited space especially in the more recent designs.

According to the present invention, I progo vide a two-piece shoe to fitabout the sides of v the tire and overthe tread thereof, the two pieceshaving projections thereon for traction purposes through which afastening bolt is passed to hold the pieces together and 1225 clamp thetire therebetween. The meeting faces of the traction projections of thetwo pieces according to my invention are so conformed that when theycome into engage ment during the tightening of the bolt the piecesfulcrum on one another at their outermost portions such that theinnermost portions are drawn together in the furthertightening of thebolt and are adapted firmly to grip the tire therebetween by pinchingthe side walls thereof. Although, of course, the device will be providedin various sizes to lit the standard sized tires, I may alsoprovide Ispacers to be introduced between the pieces to have the latter fulcrumon the opposite sides thereof and'to have the fastening bolt passedtherethrough, thus enabling use of the pieces on a tire larger than theparticular size of tire for which the same were intended. v

The invention is illustrated in the accompanying drawing, wherein Fig. 1is a side view of a tire lug made in accordance with my 5b and rim insection, and also with the righthand he 0f the tire lug'appearing ina..- tion more clearly to illustrate' the constructhe manner ofapplication of the device and the novel manner in which th saline iscaused tO-g ip' the tirej'and Egress a 'detailthe-linesof Figf 2 showingthe use of a spacer for accommodating thetirelug to a largersize'tireZ iMy-invention is illustratedfas applied 'fto' a pneumatictire "Son a:wheel 6" ofithej disc type. -As'; stated above} and as will "appearhereinafter the device. is applicable to' any type" of wheelfand to anytype 'of tire, itbe inggworthy of note',' however, that thefsa me was:designed more "particularly fl for use, on balloon tires, which arenowtmore common;

ly used. 'lhe universal application ofth'e device results 'fromi thefactthat it attaches solely to thetirelof the wheel.-'- The't'ireflug isindicated generally by the -reference numeral 7,,and; is composed'of twocomp1ementaryand interchangeable} pieces v 8* and '19 which, becauseof'their 'sliape, are*prefer- 10} of each of the pieces is; conformed tothe curvature of the; tire both inffa transverseandina'longitudinalplaneas willbe on the twopieces-beingidisposed;inaligm ment whenjthe lugis-placedon the'tire. A

bolt-12 "eXtends longitudinally -;through the projections 11 and passesfreely; thjrough openings 13 the, endsthereof, the proj eceo s being'eoredpttas'indicatediat lf'part- 1 f i pnsi e si amen bf me al. us d e feting arid par ly' o fal ew a er ain pese qpresenuy to appeal.- Thehead'end '1 7 or the bQlfi 12 bears against the-mascara projectiondl onthe-piece-S', and a nut '16 threads onto the 'bolt' '12- andbearsxagai'nst the end :of .the projection 11 0 11: the piece 3 9 75.ably formed by casting." The body fportion the meeting faces 18 and 1-9of the pieces 8 and 9 are brought into actual flushengagement. Thesefaces, it will be observed, are,

bevelled or tapered inwardly from the point of engagement at 17 v at acomparatively able pinching action of the lug on the tire. It is foundthat the resilience of the tire makes it quite unnecessaryto provide alock Washer or lock nut inconnection'with the nut 16, and there islittle or .nodanger of the lug getting loose or dropping off once i 1the bolt is tightened. The-traction :afli'or'ded by the projections 11is suflicient to enable a car to pull through heavymud sand or snow withcomparative ease. l The reinforcing, ribs indicated at 20, which extendinrconvergent relation from the projections llndown along thesides ofthe pieces 8 and 9 have also vbeen found to afford considerableadditional trae-y tion.; The device'is obviouslyiquicklyaate tachableand detachablejwithout necessitating the jacking up of thecar, and, -byreason of its .attachment'solely Lt0'the tire5 the. de-; vice willnevermarthe finish of the wheel.

As stated above,;the device will ordinarily be provided in various sizesto fit the standthat event I prefer to provide one or more spacerwashers 21 which may be inserted be;

longitudinally through the base vportion of said projections. r p

2. A traction device for attachment to the tire of a vehicle wheelcomprising a twosection shoe divided in the longitudinal median plane ofthe tread of the tire, said Sections having transverse tractionprojeciQns on the tread portion thereof disposed in alignment thecontiguous edges of said sections coming into abutment-with one an:other only at the outermost portion of said traction projections, andfastening means interconnecting the two sections of the shoe g g 1 V Mbelow the point offabutment and arranged slight angle but suflicient toafford a tolerwhen tightenedto draw the "two sections of the shoe:together to. hold on.tl1e. tire.=;. In witness of the foregoing I'aifixrmy si nature. .5. a vTROY BE CHTOLD.

V ard sized tires but itwill be obvious that the tween the pieces 8 and9to'accommodate the I a device to a slightly larger sized'tire. Thespacer 21 is preferably provided with. an :7

opening 22 through'which topass thebolt 12 to hold the same in place.It-will be'obe viousthatthe device will still exert the same pinchingaction on the tire when the bolt 12 is tightened, provided of course,that the a 1. A traction device for attachment to the v tire of avehicle wheel comprising a twoi I section shoe divided the longitudinalmedian, plane of the tread of the tire,; said sections having transversetraction p bj tions-onthe tread portion thereof disposed in alignment,the contiguous edgesjof said sections coming into abutment .with oneanother only at the outermost portion of said a traction projections,and a boltrextending

